Home / 120,520.19-166,300.40-66,805.19

Finding the Fourth Proportional to 120,520.19, 166,300.40 and 66,805.19

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Solution

The fourth proportional to 120,520.19, 166,300.40 and 66,805.19 is: 92,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,520.19 : 166,300.40 = 66,805.19 : x
  2. Step 2: Convert to fraction form
    120,520.19/166,300.40 = 66,805.19/x
  3. Step 3: Cross multiply
    120,520.19x = 166,300.40 × 66,805.19
  4. Step 4: Simplify right side
    120,520.19x = 11,109,729,819.08
  5. Step 5: Solve for x
    x = 11,109,729,819.08/120,520.19
  6. Step 6: Final answer
    x = 92,181.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.